Spring+SpringMVC+MyBatis企業級應用


古老的SSM企業級應用

Author:SimpleWu

目前Spring+SpringMVC+Mybatis也算是一套非常流行的配套開發框架。

  1. spring核心ioc、aop技術,ioc解耦,使得代碼復用,可維護性大幅度提升,aop提供切面編程,同樣的增強了生產力。提供了對其他優秀開源框架的集成支持
  2. spring mvc是對比struts2等mvc框架來說的,不說struts2爆出的那么多安全漏洞,而且是類攔截,所有Action變量共享,同時是filter入口的,而spring mvc是方法攔截,controller獨享request response數據,采用的serlvet入口,與spring無縫對接。開發而言,spring mvc更加輕量和低入門。
  3. mybatis輕量級半自動化框架,sql由開發者編寫可對語句進行調優,並且mybatis使用XML方式JAVA代碼與SQL可以解耦並且支持動態SQL語句,學習成本低。

框架搭建步驟

導包

  1. 導入Spring+SpringMVC(如果不會選全倒進去就行了)
  2. 導入mybatis包(如果需要用到日志可將mybatis依賴包導入)
  3. 導入mybatis-spring-1.3.1.jar(整合必須又這個包)
  4. 導入c3p0(當然你也可以使用其他連接池)
  5. 導入數據庫驅動

配置log4j.properties

由於MyBatis依賴與log4j輸出sql語句信息,所以需要配置log4j配置文件。

#設置輸出級別和輸出位置
log4j.rootLogger=debug,Console
#設置控制台相關的參數
log4j.appender.Console=org.apache.log4j.ConsoleAppender  
log4j.appender.Console.layout=org.apache.log4j.PatternLayout  
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n  
#設置MyBatis的輸出內容
log4j.logger.java.sql.ResultSet=INFO  
log4j.logger.org.apache=INFO  
log4j.logger.java.sql.Connection=DEBUG  
log4j.logger.java.sql.Statement=DEBUG  
log4j.logger.java.sql.PreparedStatement=DEBUG

配置WEB.xml

1.設置編碼過濾器

<filter>
		<description>字符集過濾器</description>
		<filter-name>encodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<description>字符集編碼</description>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
</filter>
<filter-mapping>
	<filter-name>encodingFilter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>

2.添加Spring配置文件位置(等下我們創建spring-context.xml)

<!-- 配置加載Spring-context文件 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring-context.xml</param-value>
	</context-param>
<!--添加Spring的監聽器-->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

3.DispatcherServlet配置

<!-- SprigMVC配置 -->
<servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <description>springmvc 配置文件</description>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

4.添加PUT DELETE支持

<!-- 添加PUT DELETE支持 -->
	<filter>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

5.配置Sessin過期時間

<!-- 配置session超時時間,單位分鍾 -->
<session-config>
	<session-timeout>15</session-timeout>
</session-config>

spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">
    <!-- 讓掃描spring掃描這個包下所有的類,讓標注spring注解的類生效 -->
    <context:component-scan base-package="com.simple.ssm.controller">
    	<!-- 只掃描@Controller與@ControllerAdvice修飾的類 -->
    	<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    	<context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
    </context:component-scan>


	<!-- 加入靜態資源與動態資源支持 -->
	<mvc:default-servlet-handler/>
	<mvc:annotation-driven/>
	
    <!-- 視圖解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp"></property>
    </bean>

</beans>

spring-context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd">
    
    <!--引入外部數據庫連接信息文件-->
	<context:property-placeholder location="classpath:db.properties" />

	<!-- 掃描所有除@Controller ,@ControllerAdvice修飾的bean -->
	<context:component-scan base-package="com.simple.ssm">
		<context:exclude-filter type="annotation"
			expression="org.springframework.stereotype.Controller" />
		<context:exclude-filter type="annotation"
			expression="org.springframework.web.bind.annotation.ControllerAdvice" />
	</context:component-scan>

	<!-- 配置c3p0連接池 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="driverClass" value="${mysql.driverClass}" />
		<!-- jdbc:mysql://localhost/mybatis?characterEncoding=utf8&amp;serverTimezone=UTC -->
		<property name="jdbcUrl" value="${mysql.jdbcUrl}" />
		<!-- 連接用戶名 -->
		<property name="user" value="${mysql.user}" />
		<property name="password" value="${mysql.password}" />
		<!-- 連接密碼 -->
		<!-- 隊列中的最小連接數 -->
		<property name="minPoolSize" value="15" />
		<!-- 隊列中的最大連接數 -->
		<property name="maxPoolSize" value="25" />
		<!-- 當連接耗盡時創建的連接數 -->
		<property name="acquireIncrement" value="15" />
		<!-- 等待時間 -->
		<property name="checkoutTimeout" value="10000" />
		<!-- 初始化連接數 -->
		<property name="initialPoolSize" value="20" />
		<!-- 最大空閑時間,超出時間連接將被丟棄 -->
		<property name="maxIdleTime" value="20" />
		<!-- 每隔60秒檢測空閑連接 -->
		<property name="idleConnectionTestPeriod" value="60000" />
	</bean>

	<!-- 配置事務管理器 -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>

	<!-- 攔截器方式配置事物 -->
	<!-- 
		<tx:advice id="txAdvice" transaction-manager="transactionManager">
			<tx:attributes>
				<tx:method name="add*" propagation="REQUIRED" />
				<tx:method name="insert*" propagation="REQUIRED" />
				<tx:method name="save*" propagation="REQUIRED" />
				<tx:method name="update*" propagation="REQUIRED" />
				<tx:method name="delete*" propagation="REQUIRED" />
				<tx:method name="remove*" propagation="REQUIRED" />
				<tx:method name="find*" propagation="SUPPORTS" />
				<tx:method name="load*" propagation="SUPPORTS" />
				<tx:method name="search*" propagation="SUPPORTS" />
				<tx:method name="*" propagation="SUPPORTS" />
			</tx:attributes>
		</tx:advice>
	 -->

	<!-- 配置切面 -->
	<!-- <aop:config> 事務入口(Service的包路徑) <aop:pointcut id="transactionPointcut" 
		expression="execution(* com.simple.ssm.service.*.*(..))" /> 將事務通知與切入點組合 <aop:advisor 
		pointcut-ref="transactionPointcut" advice-ref="txAdvice" /> </aop:config> -->

	<!-- 使用注解來控制事務 -->
	<tx:annotation-driven transaction-manager="transactionManager" />

	<!-- 配置mybatis, 綁定c3p0 -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<!-- 配置mybatis配置文件所在位置 -->
		<property name="configLocation" value="classpath:mybatis-config.xml" />
		<!-- 配置實體類XML映射所在位置 -->
		<property name="mapperLocations" value="classpath:com/simple/ssm/dao/mapper/*.xml" />
	</bean>

	<!-- 掃描生成所有dao層 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<!-- 指定持久化接口包位置 -->
		<property name="basePackage" value="com.simple.ssm.dao"></property>
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
	</bean>
</beans>

mybaits-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" 
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
	<settings>
		<!-- 開啟駝峰式命名規則 -->
		<setting name="mapUnderscoreToCamelCase" value="true"/>
		<!-- 開啟二級緩存 -->
		<setting name="cacheEnabled" value="true"/>
		<!-- 開啟懶加載 -->
		<setting name="lazyLoadingEnabled" value="true"/>
	</settings>
	
	<typeAliases>
		<package name="com.simple.ssm.entitys"/>
	</typeAliases>
</configuration>

db.properties(可內置)

mysql.driverClass=com.mysql.jdbc.Driver
mysql.jdbcUrl=jdbc:mysql://localhost/mybatis?characterEncoding=utf8&serverTimezone=UTC
mysql.user=root
mysql.password=root

到這里其實我們的SSM已經整合完成,如果我們需要其他功能可以在加,不要忘記導入包。


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